1 """ 2 Test that break on a struct declaration has no effect. 3 4 Instead, the first executable statement is set as the breakpoint. 5 """ 6 7 import os, time 8 import unittest2 9 import lldb 10 from lldbtest import * 11 import lldbutil 12 13 class StructTypesTestCase(TestBase): 14 15 mydir = os.path.join("lang", "c", "struct_types") 16 17 # rdar://problem/12566646 18 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 19 @dsym_test 20 def test_with_dsym(self): 21 """Test that break on a struct declaration has no effect.""" 22 self.buildDsym() 23 self.struct_types() 24 25 # rdar://problem/12566646 26 @expectedFailureIcc # llvm.org/pr16793 27 # ICC generates DW_AT_byte_size zero with a zero-length 28 # array and LLDB doesn't process it correctly. 29 @dwarf_test 30 def test_with_dwarf(self): 31 """Test that break on a struct declaration has no effect.""" 32 self.buildDwarf() 33 self.struct_types() 34 35 def setUp(self): 36 # Call super's setUp(). 37 TestBase.setUp(self) 38 # Find the line number to break for main.c. 39 self.source = 'main.c' 40 self.line = line_number(self.source, '// Set break point at this line.') 41 self.first_executable_line = line_number(self.source, 42 '// This is the first executable statement.') 43 self.return_line = line_number(self.source, '// This is the return statement.') 44 45 def struct_types(self): 46 """Test that break on a struct declaration has no effect and test structure access for zero sized arrays.""" 47 exe = os.path.join(os.getcwd(), "a.out") 48 49 # Create a target by the debugger. 50 target = self.dbg.CreateTarget(exe) 51 self.assertTrue(target, VALID_TARGET) 52 53 # Break on the struct declration statement in main.c. 54 lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=False) 55 lldbutil.run_break_set_by_file_and_line (self, "main.c", self.return_line, num_expected_locations=1, loc_exact=True) 56 57 # Now launch the process, and do not stop at entry point. 58 process = target.LaunchSimple(None, None, os.getcwd()) 59 60 if not process: 61 self.fail("SBTarget.Launch() failed") 62 63 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) 64 65 # We should be stopped on the first executable statement within the 66 # function where the original breakpoint was attempted. 67 self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT, 68 substrs = ['main.c:%d' % self.first_executable_line, 69 'stop reason = breakpoint']) 70 71 # The breakpoint should have a hit count of 1. 72 self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, 73 substrs = [' resolved, hit count = 1']) 74 75 process.Continue() 76 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) 77 78 # Test zero length array access and make sure it succeeds with "frame variable" 79 self.expect("frame variable pt.padding[0]", 80 DATA_TYPES_DISPLAYED_CORRECTLY, 81 substrs = ["pt.padding[0] = "]) 82 self.expect("frame variable pt.padding[1]", 83 DATA_TYPES_DISPLAYED_CORRECTLY, 84 substrs = ["pt.padding[1] = "]) 85 # Test zero length array access and make sure it succeeds with "expression" 86 self.expect("expression -- (pt.padding[0])", 87 DATA_TYPES_DISPLAYED_CORRECTLY, 88 substrs = ["(char)", " = "]) 89 90 # The padding should be an array of size 0 91 self.expect("image lookup -t point_tag", 92 DATA_TYPES_DISPLAYED_CORRECTLY, 93 substrs = ['padding[]']) # Once rdar://problem/12566646 is fixed, this should display correctly 94 95 self.expect("expression -- &pt == (struct point_tag*)0", 96 substrs = ['false']) 97 98 if __name__ == '__main__': 99 import atexit 100 lldb.SBDebugger.Initialize() 101 atexit.register(lambda: lldb.SBDebugger.Terminate()) 102 unittest2.main() 103
